that call for, or advocate acts of violence. However, it sounds like this is more about videos showing some of the violent acts of Israeli settlers towards Palestinians. This is not unlike the posting of videos showing police brutality against Blacks in America, and that sort of thing should never be censored.
I would really, really hope that nobody on a progressive board would be advocating that sort of censorship. But that's just me.
Checking out the Community Guidelines for Youtube, it looks like videos calling for the murder of Jews are already prohibited.
Violent or graphic content
It's not okay to post violent or gory content that's primarily intended to be shocking, sensational, or disrespectful. If posting graphic content in a news or documentary context, please be mindful to provide enough information to help people understand what's going on in the video. Don't encourage others to commit specific acts of violence.
Hateful content
Our products are platforms for free expression. But we don't support content that promotes or condones violence against individuals or groups based on race or ethnic origin, religion, disability, gender, age, nationality, veteran status, or sexual orientation/gender identity, or whose primary purpose is inciting hatred on the basis of these core characteristics. This can be a delicate balancing act, but if the primary purpose is to attack a protected group, the content crosses the line.
http://www.youtube.com/yt/policyandsafety/communityguidelines.html
If you see a video like that, you should report it immediately. I've never seen anything like that myself, but then I've never gone looking for that sort of thing on Youtube before.